I loved my MBA 13 Ultimate so much, we decided to go and get my girlfriend one.. I got this one at the local apple store.. When I bought my MBA, I ordered AppleCare separately, a few weeks later.. for hers, I got it at the Apple Store.. noticed today when I went to register hers for AC, there was no serial # in the box, etc.. I assume that registration happened automatically when we bought it.. since we bought them together from apple. Does this sound right? thanks.